Granted Patent
Utility
US 5,327,291 · App. 07/860,401
Compact objective lens
Inventors:
James Baker, William T. Plummer, Jon Van Tassell
Patented Case
View Patent ↗
Granted: Jul 5, 1994
Filed: Mar 30, 1992
Inventors
James Baker
William T. Plummer
Jon Van Tassell
Assignee (at issue)
Polaroid Corporation
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.